The 13-voice acoustic ensemble released its debut CD in May and had it available at the 2017 Tucson Folk Festival, but founder and director Gabrielle Pietrangelo decided to hold off on the big release until the group’s headlining show this weekend.

The folk group, which quickly gained a reputation for spot-on harmonies in a repertoire that includes reimagined folk standards, normally performs unaccompanied, but on Friday they will share the stage with Beth Daunis on fiddle and Thoger Tetens Lund on bass.

The show starts at 7:30 p.m. at the Scottish Rite Cathedral, 160 S. Scott Ave. downtown. Admission is $15 at the door or in advance at sistersolace.com

Pietrangelo, formerly of the vocal ensemble Silver Thread Trio, formed Sister Solace in early 2016 to perform American folk music that borrows from Appalachian and American traditions. It is the latest in a series of musical projects Pietrangelo has been nurturing since the early 2000s.

Her longest-running project was Silver Thread Trio, which released two recordings during its six years together. The group disbanded in 2014.